To simplify software development
We define Open Source
The Open Source Definition is the foundation of the modern software ecosystem. We build a world where the freedoms and opportunities of Open Source software can be enjoyed by all.
The leading voice on the policies and principles of open source
Protecting the Open Source ecosystem
We support institutions and individuals working together to create communities of practice in which the healthy open source ecosystem thrives.
Open Source Initiative Helps G7 Deliver Vision On AI Openness
On May 29, 2026 in Paris, G7 Digital and Technology ministers approved a “Vision on AI openness opportunities and shared language”. The vision, which sets out terminology around AI openness, is the result of a three-month …
Open Source Organizations Weigh in on Age Attestation
The Open Source Initiative (OSI), Apereo Foundation, FreeBSD Foundation, and Open Source Technology Improvement Fund (OSTIF) issued the following statement on age attestation requirements for operating systems.
Open Technology Research Symposium 2026 Opens Call for Proposals
The OSI is pleased to support the inaugural Open Technology Research (OTR) Symposium 2026, taking place on 26–27 October 2026 at the historic University of Barcelona. The Call for Proposals is now open through 5 July …
Listening, Learning, and Building Together at OSI
Members Newsletter – May 2026 OSI Executive Director Duane O'Brien: I expect my listening tour will continue for a little while as I make the rounds to meet as many of our stakeholders as I can. …
Support Open Source
As a public charity organization, OSI is supported by donations of corporations and individuals. Thanks to our sponsors that support our vision to be the leading voice on policies and principles of Open Source.
The board of directors
Most of OSI’s board of directors are elected by individual members and Affiliate organizations.